eText Payment Format in BIP output appending question marks

Summary:

I have created a custom Disbursement Payment File format using eText, and placed in the Custom folder in BI Publisher to be used in a payment process profile. The eText RTF template outputs a fixed-length txt file containing multiple record types, some of which are conditional based on the payment type (check or electronic). All of the records in the file seem to be generating correctly when the file is run, but one specific record type always has 10 question marks "??????????". The question marks are added to the beginning, not replacing any of the file's content, and the question